Through　the　method　of　solvent-free　confined　encapsulation，dibromo-p-diphenyl　and　4，4′-bipyridine　were　adsorbed　into　the　UiO-67　material，and　then　in　situ　polymerized　into　the　polymer　ionic　liquid　PBpy-Br.　The　com⁃　posite　PBpy-Br@UiO-67　contains　three　kinds　of　active　centers：Br−，Zr-OH/Zr-OH2　and　N　heterocyclic.　The　structure　was　characterized　by　X-ray　diffraction（XRD），Fourier　transform　infrared（FTIR）spectroscopy，scanning　electron　microscopy（SEM），13C　nuclear　magnetic　resonance　spectrometry（13C　NMR），Brunauer-Emmett-Teller（BET）analysis　and　thermogravimetric　analysis（TGA）.　The　composite　was　applied　to　catalyze　the　cycloaddition　reaction　of　CO2　and　epichlorohydrin.　On　the　basis　of　single　factor　experiments，the　optimal　reaction　conditions　determined　by　response　surface　optimization　were　100　℃，pCO2=0.1　MPa，PBpy-Br@UiO-67　mass　fraction　of　0.22%　and　22　h.　Under　the　optimum　reaction　conditions，the　yield　of　cyclochlorocarbonate　reached　99.6%，and　the　conversion　decreased　by　only　2.3%　after　5　cycles.　When　the　composite　was　used　to　catalyze　other　epoxides，a　conversion　of　over　50%　was　obtained.　PBpy-Br@UiO-67　has　milder　reaction　conditions　and　higher　catalytic　efficiency，which　provides　a　new　catalytic　system　for　CO2　fixation　and　conversion.　©　2024　Higher　Education　Press　Limited　Company.　All　rights　reserved.